CVE-2012-4191
The mozilla::net::FailDelayManager::Lookup function in the WebSockets implementation in Mozilla Firefox before 16.0.1, Thunderbird before…
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
The mozilla::net::FailDelayManager::Lookup function in the WebSockets implementation in Mozilla Firefox before 16.0.1, Thunderbird before 16.0.1, and SeaMonkey before 2.13.1 allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unspecified vectors.
Timeline
ID reserved
By mitre
- 2 months later
· 2 months later
Published
- 12 years later
· 12 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | High9.3 | AV:N/AC:M/Au:N/C:C/I:C/A:C |
- EPSS (exploitation in 30 days)
- 3.9% · top 9.7% of all CVEs (8 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 9.3.
Weakness
Affected products
n/a
- affected n/a
References (11)
- 50904 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 50984 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- oval:org.mitre.oval:def:16719 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- https://bugzilla.mozilla.org/show_bug.cgi?id=798045 (opens in a new tab)x_refsource_CONFIRMx_transferred
- mozilla-websockets-code-execution(79209) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- 86125 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
- USN-1608-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- http://www.mozilla.org/security/announce/2012/mfsa2012-88.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- 50929 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- USN-1611-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- 1027653 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2012-4191)Record last updated .